WordPress Anti-spam Plugins

EmailToAscii replaces email addresses in the content (post or page) by their ascii translation in order to avoid spam bots.

Your user can custom his own password on the registration screen with me.

Lightweight, easy-to-configure Cloudflare Turnstile CAPTCHA protection for WordPress login, registration, comments, and password reset forms.

Simple shortcode to scramble (hide) email addresses to email bot harvesters.

A simple and efficient anti-spam plugin

An anti-spam captcha using jQuery's UI slider. After the position of the slider is past 60% (default), it will enable the submit button.

Lemin Captcha is uniquely playful, robust, and effective. Through gamification, we are curing the pains of traditional CAPTCHA.

Stop SPAM! Stop HAKING! No annoying CAPTCHA for your users! As simple as that!

This plugin allows you to implement Google reCAPTCHA (CAPTCHA) into your web forms.

A simple to use plugin that helps you keep your WordPress site clean of spam comments.

FormShield protects your forms from bot spam using advanced pattern matching and behavioral analysis. No annoying captchas, unlimited forms.

Block WordPress comment spam, trackback spam, and pingback spam through intelligent analytics instead of interactive challenge response tests.

The plugin DigoWatchWP scans your blog posts and pages for changes.

Secure Signups helps to filter user registrations based on email domain, enabling a secure and controlled signup process.

Security plugin blocking spam bots from harvesting email addresses, phone numbers & addresses. Dual-layer anti-spam protection with auto-detection.

Firewall protection for comments. Blocks spam before it reaches your database with automatic link filtering and zero manual moderation.

Advanced, lightweight, GDPR-compliant anti-spam protection for WordPress comments. No setup required.

With the uProc for Wordpress plugin you can easily verify if an email address really exists and is valid. Additionally, you can check all existing too …

Replace ReCAPTCHA with a faster, user-friendly solution and block spammers & bots permanently

A modular, high-performance SQLite-backed contact form plugin with advanced security, anti-spam features, and zero database overhead.

Ctanfor Anti-spam is a small and lightweight anti-spam plugin. It is free for personal and commercial use. The vast majority of filtering operations a …

A lightweight anti-spam plugin using honeypot, timing, keyword, and reCAPTCHA v2 Checkbox protection. Blocks bots silently while keeping UX clean.

Simple anti-spam plugin for WordPress blogs.

Integrates Cloudflare Turnstile, Limits Login Attempts, and Disables XML-RPC to protect WordPress forms.

Smart and AI-powered anti-spam protection for WordPress comments. Blocks bots and spam automatically, with optional ChatGPT-based detection.

Using AI large language models to automatically detect and filter spam comments, supporting APIs compatible with the OpenAI format.

A simple and lightweight yet rock-solid plugin that blocks comment spam using multiple automatic detection methods.

WordPress security plugin protecting from vulnerabilities, zero-day attacks, harvesters, spam, and hacking attempts.

NoParam offers real-time email validation for WordPress to prevent fake signups and spam, improving email deliverability.

Advanced bot protection for WordPress using real-time behavioral analysis. Blocks malicious traffic while allowing legitimate users seamless access.

Apply a simple mathematical captcha to specific buttons by providing their CSS class or ID to prevent spamming.

The ultimate solution to prevent spam comments like a ninja on the default commenting system for WordPress in WordPress.

A lightweight WordPress contact form plugin with 18 themes, SMTP support, Google reCAPTCHA or internal captcha, and instant theme switching.

Multi-layer spam protection for WordPress forms with honeypot, rate limiting, token validation & comprehensive bot detection.

Katorymnd Contact Form is a simple but secure contact form Verified and ready to use.